Blowing Agent Composition of Hydrochlorofluoroolefin

Abstract

A blowing agent for thermosetting foams is disclosed. The blowing agent is predominately the trans isomer of the hydrochlorofluoroolefin (HCFO) HFCO-1233zd alone or in combination with a hydrofluoroolefin (HFO), hydrofluorocarbon (HFC), hydrochlorofluoroolefin (HCFO), a hydrocarbon. The blowing agent is effective as a blowing agent in the manufacture of thermosetting foams.

1 . A polyisocyanurate foam composition comprising a polymer blowing agent composition comprising a combination of the hydrochlorofluoroolefin HCFO-1233zd and pentane wherein from about 10 to 60 wt % of said combination is the hydrochlorofluoroolefin HCFO-1233zd and from about 40 to 90 wt % is pentane and wherein more than about 70 wt % of said hydrochlorofluoroolefin HCFO-1233zd is the trans stereoisomer of hydrochlorofluoroolefin 1233zd. 
     
     
         2 . The polyisocyanurate foam composition of  claim 1  wherein said hydrochlorofluoroolefin HCFO-1233zd comprises about 90 wt % or more trans stereoisomer. 
     
     
         3 . The polyisocyanurate foam composition of  claim 1  wherein said hydrochlorofluoroolefin HCFO-1233zd comprises about 96.5 wt % or more trans stereoisomer. 
     
     
         4 . The polyisocyanurate foam composition of  claim 1 , further comprising a hydrofluorocarbon. 
     
     
         5 . The polyisocyanurate foam composition of  claim 4  wherein said hydrofluorocarbon is selected from the group consisting of difluoromethane (HFC32); 1,1,1,2,2-pentafluoroethane (HFC125); 1,1,1-trifluoroethane (HFC143a); 1,1,2,2-tetrafluorothane (HFC134); 1,1,1,2-tetrafluoroethane (HFC134a); 1,1-difluoroethane (HFC152a); 1,1,1,2,3,3,3-heptafluoropropane (HFC227ea); 1,1,1,3,3-pentafluoropropane (HFC245fa); 1,1,1,3,3-pentafluorobutane (HFC365mfc) and 1,1,1,2,2,3,4,5,5,5-decafluoropentane (HFC4310mee). 
     
     
         6 . The polyisocyanurate foam composition of  claim 1 , further comprising a hydrofluoroolefin. 
     
     
         7 . The polyisocyanurate foam composition of  claim 6  wherein said hydrofluoroolefin is selected from the group consisting of tetrafluoropropenes; trifluoropropenes; tetrafluorobutene isomers; pentafluorobutene isomers; hexafluorobutene isomers; heptafluorobutene isomers; heptafluoropentene isomers; octafluoropentene isomers; and nonafluoropentene isomers. 
     
     
         8 . The polyisocyanurate foam composition of  claim 1 , further comprising an additive selected from the group consisting of C1 to C5 alcohols, C1 to C4 aldehydes, C1 to C4 ketones, C1 to C4 ethers, carbon dioxide, and C1 to C4 diethers. 
     
     
         9 . The polyisocyanurate foam composition of  claim 1 , further comprising a hydrochlorofluoroolefin other than HCFO-1233zd. 
     
     
         10 . The polyisocyanurate foam composition of  claim 1  wherein from about 15 to 50 wt % of said combination is the hydrochlorofluoroolefin HCFO-1233zd and from about 50 to 85 wt % is pentane. 
     
     
         11 . The polyisocyanurate foam composition of  claim 1  wherein from about 20 to 60 wt % of said combination is the hydrochlorofluoroolefin HCFO-1233zd and from about 40 to 80 wt % is pentane.